188 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



circumstances that deprive its presence of any special 

 significance. 



I am not arguing against the value of bacteriology, but 

 against a possible abuse of the method, and in favour of a 

 much wider investigation in which the laboratory work will 

 in all cases be supplemented, guided and inspired by the 

 marine biologists' work in the field. The case of each 

 estuary, bed, or laying must be regarded as a separate 

 problem to be solved with a full knowledge of all the local 

 conditions. 



